A THEORETICAL PREDICTION FOR EXCLUSIVE DECAYS B-]K(K-ASTERISK)ETA(C)

被引:10
|
作者
AHMADY, MR
MENDEL, RR
机构
[1] Department of Applied Mathematics, University of Western Ontario, London, Ontario
来源
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1995年 / 65卷 / 02期
关键词
D O I
10.1007/BF01571882
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
The decay rates for the exclusive B decays B --> K eta(c) and B --> K*eta(c) are calculated in the context of the heavy quark effective theory. We obtain Gamma(B --> K eta(c))/Gamma(B --> K psi) = 1.6 +/- 0.2 and Gamma(B --> K*eta(c))/Gamma(B --> K*psi) = 0.39 +/- 0.04. These results lead to estimates BR(B --> K eta(c)) = (0.11 +/- 0.02)% and BR(B --> K*eta(c)) = (0.05 +/- 0.01)% if we use the central current experimental values for B --> (K,K*)psi branching ratios.
引用
收藏
页码:263 / 265
页数:3
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